form{
    width: 600px;
    margin: auto auto;
    padding-left: 100px;
}
.span_inline{
    float: left;
    display: inline-block;
    margin-left: 20px;
}
.input_inline{
    width:250px;
    float: left;
}
.button_diy{
    margin-left: 140px;
}
